Molding concrete blocks.



H. BRIGGS.

MOLDING CONCRETE BLOCKS.

APPLICATION 2mm JAN. 22. 1908.

Patented Mar. 23, 1909.

4 SHEETS-SHEET l.

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ATTORNEY H. BRIGGS.

MOLDING GONORETB BLOCKS.

APPLICATION FILED 3111.22, 1908.

91 6,260. Patented Mar. 23, 1909.

4 BHEETSSHBET 2.

WITNESSES:

INVENTOR 77" U Hem- 377' .5 do 5d W 4 BY ATTORNEY WITNESSES:

H. BRIGGS.

MOLDING CONCRETE BLOCKS.

APPLICATION FILED JAN. 22, 190B.

Patented Mal 23, 1909.

4 SHEETS-SHEET 3.

H. BRIGGS.

MOLDING CONCRETE BLOCKS.

APPLICATION FILED JAN. 22, 1908.

91 6,260. Patented Mar. 23, 1909.

4 SHEETSSHEET 4.

WITNESSES; mvgmoR ATTORNEY rut Noam: PETERS ca, minimum". a. c.

HENRY BRIGGS, OF HASBROUCK HEIGHTS, NEW JERSEY.

MOLDING CONCRETE BLOCKS.

Specification of Letters Patent.

Patented March 28, 1909.

Application filed January 22, 1908. Serial No. 412,172.

T 0 all whom it may concern:

Be it known that I, HENRY BuiGGs, a citizen of the United States,residing at liasbrouck Heights, in the county of Hackensacl: and Stateof New Jersey, have invented new and useful Improvements in MoldingUoncrete Blocks, of which the following is a speci- 9 fication.

By means of this invention a mold can be set for forming a number ofblocks or the like with accurate uniformity or correspondence. Suchblocks can be either parallel sided or so called angle blocks of anydesired angular degree. Such mold can then be removed from the containedblock in sections or so as not to affect or deface any part of the blockand such sections then reunited for furthcr operation while continuallymaintaining the original angularity without resetting or readjustmentbeing re uired.

The device also enab es brick or block to be readily set aside to dry orharden while the device is kept in use for forming subsequent blocks.

The device can also serve for forming blocks of various sizes andvarying ornamentations from plane to different designs as well asdifferent angularity.

This invention is set forth in the following specification and claimsand illustrated in the annexed drawing in which- Figure 1 shows a planview of a molding device embodying this invention. Fig. 2 is a sectionalong line X X Fig. 1 Fig. 3 is a section along line Y Y Fig. 1 Fig. 4is a section along line Z Z Fig. 1 Fig. 5 shows a detail view of aface-plate Fig. 6 is an edge view of Fig. 5 Fig. 7 is a view like Fig. 1the mold parts being dismembered or separated. Fig. 8 shows parts ofFig. 7 when kept united as for a plane faced block.

In this drawin is shown a table or support with legs a and longitudinaland transverse beams 19 and a so as to form a table of skeleton shape.let or flat base piece d with handles e at suitable points. On thispallet is shown a mold comprising side walls each made in sections f andg. Each side wall can have its sections separably united by means ofconnecting members h adapted for the application of bolts or fasteningsi. The wall section g is connected to its member h by are sections 7c mwhich can be set to a desired angle and then fixed by a clamp or a screwn. The

Onto this table is placed a palconnecting member 71 of section f isfixed thereto.

When the clamping arc has bcen fixed by its screw '21. to a desiredangle the scctionsfg or their connections I: can then be assembled and,separated at will but the angle to which the arc has been fixed can atall times be maintained. As the resetting to a selected are or anglewhen once disturbed is dillicult the maintaining of such angle betweensectionsf and l in spite of connection and disconnection is anadvantage.

By enabling wall sections f g to be set to line with one another or toany selected angle, blocks of various kinds can be produced in the moldsuch as square cornered or angular. Face pieces 0 are shown at thesections f g of a side wall and a like face piece 0 can also be suppliedto an end piece p to be presently referred to. Those face pieces mayhave various designs or facings according to the decoration to beproduced on the block or building stone to be formed in the mold.

The face pieces can be secured in place by bolts 9 in the side walls andend pieces, said face pieces having dove tailed or undercut grooves forengaging the bolt heads and allowing the face pieccs to be slipped orslid to place before being clamped or bolted.

In addition to .the end piece p carrying a face piece 0 there is shownanother end piece 19 having a core piece r screwed thereto or which canbe connected the same as face piece 0. These end pieces can be composedof several sections bolted together so that they can be fitted forvarious desired widths. The end pieces can be connected to the sides byclamps composed of hook shaped pieces slidably connected by slot and pinconnection to the end pieces. Such a clamp or book piece can be liftedto be passed over a side piece as shown by dotted lines in Fig. 3 andthen slipped down so as to hook over the side and fastened by screw 3.When disconnected the end pieces can be laid aside for future use.

The mold is assembled as follows: The side pieces f g are set to properangle and connected to one another by end pieces p and placed on palletd where they are clamped by clamp pieces 4 shown of L shape and boltedat 5 to bottom plates 6. The horizontal branches of clamps 4 are slittedso that when bolts 5 are loosened the clamps can be slid to or from thepieces f g to engage or release IOU their lower or flanged portions. Theside pieces having the faces 0 connected thereto are then screwed to thepallet the end pieces having been screwed between the sides. Into thisclosed mold is then placed a core piece 7 and the plastic mass tamped orpoured into the mold. When suitably set the side pieces are disconnectedat h and the end pieces freed at 2 and the clamps 4 also freed. Piece ormember f can then be pulled away from the block at right angle to itscorresponding block face, and members 9 and 0 as also member 10 can eachbe likewise moved away each at right angle to its corresponding blockportion. By thus severally removing the respective side, end and facepieces each in square or rectangular direction all skew or scraping of aface piece over a block face is avoided which especially in case of aroughened or ornamented face would be objectionable.

The core piece 7 can be employed to give the usual hollow in suchblocks. At a suitable time the various parts are unclamped or separated.The skeleton top allows the table to be kept clear of any scrap orrefuse.

When unclamped the pallet is removed with the formed or molded block tobe allowed to set and by inserting another pallet on the table theoperation. can be repeated and continued.

The end pieces have all their four angles each formed as a right angleand these end pieces are of such width as to accurately seat the sidewall sections when the end pieces and side sections are clamped solidlyor closely together. By this means each end piece forms an angle ofninety degrees with each adjacent side section. vi hen such end piecesare clamped accurately against the side sections of one side, then theopposite side sections as they are moved to sit accurately or squarelyto the end pieces will be brought thereby to position to preserve theangle of the arc.

By having not only the blocks of uniform angularity with one another orthe are preserved, but by also having each angle in each block uniformwith the opposite angle in the same block, these blocks by being laid.up reversed as is done in building to break oints, will preserve theexterior and interior angles in a right or true vertical line.

As seen in dotted lines in Fig. 1 if an arc is drawn about an angle ofthe block from a side section of one side to the side section of theother side then a line across the block from angle to angle will bisectsuch are or divide the are into two equal halves. In other words theline 8 will halve the are 9.

I claim- 1. In a molding device, sectional side walls adapted to befixed at various degrees of angularity, and end sections combined withbow shaped clamps for detachably uniting end and side sections, saidclamps being connected at one shank to a section by a pin and slotconnection and having a clamping screw at the other shank for engagingan opposite section.

lnamolding device, side walls each composed of sections with connectingand adjusting means for maintaining a selected angle while connectingand separating the sections, frame shaped end pieces and hook shapedclamps having one branch extended into and slidably connected to the endpieces and having the opposite branches provided. with screws forengaging the side walls.

3. In a molding device side walls each made in sections adjustable withrelation to one another, combined with rectangular parallel sided andframe shaped end pieces hav ing clamps at each extremity to engageopposite side sections, said end pieces adapted to bring the sidesections into right angle with the end pieces when clamped thereto sothat when the end pieces have been clamped to the sections of one side,the side sections at the other side as they are clamped to the endpieces will be secured in position to have the arc of the anglepreserved.

ln'testimony whereof have hereunto set my hand in the presence of twosubscribing witnesses. 7

HENRY BRIGGS.

Witnesses:

JENNIE VJERs'rEIN, WILLIAM MILLER.

